This configuration is suitable for high resolution Absorbance where in the Chemistry field it’s possible to test aromatic compounds and solvents. In Biology and Medical areas the purity and type of a nucleic acid is determined by the ratio of Absorbance values, read at 260 and 280 nm. Transmission and Irradiance measurements in application areas such as Physics and Materials are also possible with this spectrometer. Combine it with a Flow Cell FCFPE and LS-DW Light Source to use it as an HPLC detector.

The SPEC RES+ UV spectrometers are coated for high UV sensitivity and extended UV range down to 180 nm.

The spectrum below (left) shows the full spectra using a Mercury lamp with special focus (right) on two very close lines: 312.57 and 313.15 nm. These two lines are normally indistinct but perfectly resolved on this configuration.

Wavelength range

180-400 nm

Slit

10 µm

Grating

1800 lines @ 250 nm

Resolution

0.2 nm

Detector

3648 pixels CCD array Toshiba

Pixel width x Height

8 x 200 µm

Optical design

Symmetrical Czerny-Turner

Order sorting filters

-

Long pass filters

-

Focal length

50 mm

Dark noise (RMS)

32

Dynamic range

2048

Signal/Noise

350

Stray light

99.94 %

Integration time

3 ms - 214 s

QE (%) @ peak

40%

Peak wavelength

550 nm

Pixel well depth

120000

PRNU

5%

A/D converter

16 bits

Interface

Mini USB 2.0

Trigger

In/Out

Trigger delay

In

Fiber connector

SMA 905

Weight

650 g

Dimensions

116 (L) x 93 (D) x 55 (H)

The image below shows the spectra of a Light Source (LS-DW) from Sarspec, obtained with all four configurations from the SPEC RES+family.